Abstract: The present study included evaluating different morphological and seed parameters of maize germplasm and their response to NP-levels for higher production. Germplasm having different morphological characteristics affect their performance with their different genetic constitution. In order to increase maize yield unit area-1, selection of a suitable germplasm in maize is of greatest importance. Different NP-levels used were Control, 100:50, 120:60, 140:70 and 160:80. While the germplasm studied were FRHY-10, EV-1089, Margalla, Rawal and Gauher. Results showed that grain yield of the germplasm was significantly affected by NP-levels and highest grain yield was produced at 140:70 followed by 120:60, 160: 80, 100:50 and control. Significant differences were also obtained with NP levels in the germplasm with regard to the plant height, number of leaves/plant. Days to 50% Silking, were also significantly affected by both NP-levels and germplasm. Highest grain yield of 3550 kg ha-1 was recorded in genotype FRHY-10 with NP level of 140:70 NP kg ha-1.